Array measurements ROBAT 226.238:ΒΆ
- 5 mic array adafruit 5 i2s (from 1=left to 5=right)
- 48khz
- 1.5 meters distance (~ far field = 10π; πmax = fmin; 343/2 = 171 Hz --> 10π = 1715 Hz; at 1000Hz: 4.5π = 4.5*0.343 = 1.5435 m)
- measured clockwise (R: 0-180; L: 180-360)
- array rotated around the central mic kept a 1.5m from source
HW settings:
- Harman kandon AWR 445 vol = -25 db (front: 270 to 90)
- Harman kandon AWR 445 vol = -5 db (back: 100 to 260)
- fireface analog out 1/2 stereo vol = 0db
- tweeter #1
- Ref mic: gras +30 db fireface channel 9, +20db channel A power module
NOTE:
InΒ [1]:
from IPython.display import Image
from IPython.display import display
display(
Image(filename="./PXL_20250509_10061094.jpg", width=300),
Image(filename="./PXL_20250509_10062195.jpg", width=300),
Image(filename="./rme802_matrix.png", width=700),
Image(filename="./rme802_mixer.png", width=700)
)